added pg support in dev
Merge pull request #15 from thegreatmichael/8e4472fac27c29a91f4b4f9e84ac9e9b70188aa2

Added postgres support
Converted $.rails.allowAction override to Coffeescript.
Made course grade page load much faster; refactored some helper methods.
Upgraded to Rails 4.0.0.
Replaced 'thin' server with 'puma'.
Added turbolinks and js-routes gems.
Fixed a few small bugs. Added full_name field to setup page.
Added the Aptana .project file
New reference repositories now receive a solution folder (was causing Internal Server Errors because of missing dir)
Removed user navbar dropdown in favor of two nav buttons. Also changed methods that create a git repo to dogde a weird error.
Moved settings button on the course home to a tab that contains the form. Added messages in case of empty self_enrollment lists.
Merge branch 'master' of https://github.com/web-cat/pythy
Merge branch 'artur-master'
Updated skulpt to 3-ish branch.  Removed turbolinks.  Added Eclipse/aptana project file. Minor cap deployment tweaks.
Minor tweaks to messages for enrollment controls.